CN221029653U - Temporary fixing structure for steel box girder cantilever assembly construction - Google Patents
Temporary fixing structure for steel box girder cantilever assembly construction Download PDFInfo
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- CN221029653U CN221029653U CN202322927904.6U CN202322927904U CN221029653U CN 221029653 U CN221029653 U CN 221029653U CN 202322927904 U CN202322927904 U CN 202322927904U CN 221029653 U CN221029653 U CN 221029653U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 121
- 239000010959 steel Substances 0.000 title claims abstract description 121
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 239000000725 suspension Substances 0.000 claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 238000009417 prefabrication Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a temporary fixing structure for cantilever assembly construction of a steel box girder, which comprises a main fixing plate, wherein the main fixing plate comprises a pre-fixing section and a suspension splicing section, the pre-fixing section is pre-fixed and fixedly connected to the suspension splicing end of the first steel box girder, the suspension splicing section extends out of the suspension splicing end of the first steel box girder, and when the second steel box girder is erected, the first steel box girder can be erected on the second steel box girder through the suspension splicing section, so that the temporary support on the bridge deck of the existing viaduct to bear the weight of the first steel box girder is avoided, and the traffic influence on the existing viaduct is avoided; the rib plates support the main fixing plate from the side surfaces to prevent the main fixing plate from inclining to the two sides, and the rib plates can also be matched with the first steel box girder and the second steel box girder to share the stress of the main fixing plate; the reinforcing plate is arranged along the length direction of the main fixing plate, the lower end face of the reinforcing plate is fixedly connected with the upper end face of the rib plate, and the strength of the main fixing plate and the rib plate is further increased, so that the main fixing plate and the rib plate can be closely related to each other when being stressed.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a temporary fixing structure for steel box girder cantilever assembly construction.
Background
With the development of cities, the existing roads are difficult to meet more and more traffic flows, and the construction of viaducts on the existing roads is an effective method for relieving traffic pressure; the steel box girder used for construction of the existing viaduct is a common structural form of a large-span bridge, and has the advantages of being small in weight, high in strength, convenient to construct and the like.
The existing viaduct A is a viaduct which is put into use, and an overhead bridge B which is crossed with the existing viaduct A is required to be erected according to urban planning; the overpass B is formed by assembling a plurality of steel box girders, when the width of the existing overpass A is larger than the length of the steel box girders, the steel box girders above the pavement of the existing overpass A are difficult to assemble, and the construction difficulty is specifically as follows: because the existing viaduct A is put into use, if temporary supports for supporting the steel box girders are erected on the pavement of the existing viaduct A, the steel box girders are arranged on the temporary supports for assembly, the use of the road A can be affected, and the construction and the dismantling of the temporary supports are both labor and material resources; if hoisting equipment is used, the steel box girder is hoisted to the upper space of the existing viaduct A for assembly, and the suspension arms of the hoisting equipment can be interfered by the two side walls of the existing viaduct A, so that the steel box girder is difficult to hoist in place by the hoisting equipment.
How to use the steel box girder to finish the construction of a new overpass without affecting the use of the existing overpass when the width of the existing overpass is larger than the length of the steel box girder is a problem to be solved urgently by bridge construction departments.
Disclosure of utility model
The utility model aims to solve the problems that: the temporary fixing structure is used for replacing the temporary fixing structure of the cantilever assembly construction of the steel box girder which is constructed on the temporary support of the bridge deck of the existing viaduct when the steel box girder is connected across the existing viaduct.
The utility model solves the problems by adopting the following technical scheme: the temporary fixing structure for the cantilever assembly construction of the steel box girder comprises a main fixing plate, a rib plate fixedly connected to at least one side of the main fixing plate and a reinforcing plate fixedly connected to the upper part of the main fixing plate; the main fixing plate comprises mutually connected pre-fixing sections and suspension splicing sections; the pre-fixing section is fixedly connected to the suspension splicing end of the first steel box girder through prefabrication, and extends out of the suspension splicing end of the first steel box girder and is used for being erected at the suspension splicing end of the second steel box girder to form temporary fixing; the rib plates are arranged at intervals along the length direction of the main fixing plate; the reinforcing plate is arranged along the length direction of the main fixing plate, and the lower end face of the reinforcing plate is fixedly connected with the upper end face of the rib plate so as to increase the strength of the rib plate.
Compared with the prior art, the main fixing plate is provided with the main fixing plate, and the main fixing plate comprises the pre-fixing section and the suspension splicing section, wherein the pre-fixing section is pre-fixed and fixedly connected to the suspension splicing end of the first steel box girder, the suspension splicing section extends out of the suspension splicing end of the first steel box girder, and when the second steel box girder is erected, the first steel box girder can be erected on the second steel box girder through the suspension splicing section, so that temporary support on the bridge deck of the existing viaduct to bear the weight of the first steel box girder is avoided, and the traffic influence on the existing viaduct is avoided; the rib plates are arranged at intervals along the length direction of the main fixing plate, the main fixing plate can be supported from the side face, the main fixing plate is prevented from inclining to two sides, the lower end face of the rib plate can be fixedly connected with the first steel box girder, so that the connection strength with the first steel box girder is increased, and the rib plate can be contacted with the second steel box girder during suspension splicing to share the stress of the main fixing plate; the reinforcing plate is arranged along the length direction of the main fixing plate, the lower end face of the reinforcing plate is fixedly connected with the upper end face of the rib plate, the strength of the main fixing plate and the rib plate is further increased, the main fixing plate and the rib plate can be closely related to each other when being stressed, and the probability of deformation or fracture of the main fixing plate and the rib plate is reduced when the steel box girder cantilever is assembled and constructed.
The temporary fixing structure for the cantilever assembly construction of the steel box girder comprises a main fixing plate, a first fixing plate and a second fixing plate, wherein the main fixing plate is of a rectangular structure and is perpendicular to the upper end face of a first steel box girder or a second steel box girder; the main fixing plate comprises a first end face arranged below, a second end face arranged above and side end faces arranged on two sides; the first end face is used for being welded and fixed with the upper end face of the first steel box girder or the second steel box girder.
The temporary fixing structure for the cantilever assembly construction of the steel box girder comprises a reinforcing plate, a fixing plate and a fixing plate, wherein the reinforcing plate is of a rectangular structure and is vertically arranged on the second end face of the main fixing plate; the reinforcing plate comprises a fourth end face arranged below; and the fourth end face is welded and fixed with the second end face.
The temporary fixing structure for the cantilever assembly construction of the steel box girder comprises a plurality of rib plates, wherein the rib plates are perpendicular to the side end faces of the main fixing plate and perpendicular to the fourth end face of the reinforcing plate.
The utility model relates to a temporary fixing structure for cantilever assembly construction of a steel box girder, wherein a rib plate comprises a fifth end face arranged above and a sixth end face arranged on a side face; the fifth end face and the fourth end face are welded and fixed; and the sixth end face and the side end face are welded and fixed.
The utility model relates to a temporary fixing structure for cantilever assembly construction of a steel box girder, wherein a rib plate further comprises a seventh end surface arranged below; the seventh end face has an area larger than that of the fifth end face; and the seventh end face is matched with the upper end face of the first steel box girder or the second steel box girder.
The temporary fixing structure for the cantilever assembly construction of the steel box girder comprises a reinforcing plate, wherein an inclined fixing plate is arranged below the reinforcing plate; a fixed inclined plane is arranged on one surface of the inclined fixing plate, which is close to the first steel box girder or the second steel box girder; the fixed inclined plane is matched with the side face of the first steel box girder or the second steel box girder.
The utility model relates to a temporary fixing structure for steel box girder cantilever assembly construction, wherein a hollow groove is formed at the joint of an inclined fixing plate and a rib plate.
Drawings
FIG. 1 is a front view of the present utility model;
FIG. 2 is a side view of the present utility model;
FIG. 3 is a schematic view of the structure of the present utility model with an oblique fixing plate;
FIG. 4 is an end view of the present utility model mounted to a steel box girder;
FIG. 5 is a schematic illustration of an application of the present utility model;
FIG. 6 is a schematic view of the present utility model in a lifting position;
FIG. 7 is a schematic view of the present utility model after lifting;
fig. 8 is a schematic view of the present utility model with an angled securing plate after lifting.
Detailed Description
Before any embodiments of the utility model are explained in detail, it is to be understood that the utility model is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The utility model is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Furthermore, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.
Also, in the present disclosure, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms should not be construed as limiting the present disclosure; in a second aspect, the terms "a" and "an" should be understood as "at least one" or "one or more", i.e. in one embodiment the number of one element may be one, while in another embodiment the number of the element may be plural, the term "a" should not be construed as limiting the number.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
Referring to fig. 1-8, a temporary fixing structure for cantilever assembly construction of a steel box girder comprises a main fixing plate 1, a rib plate 2 fixedly connected to at least one side of the main fixing plate 1, and a reinforcing plate 3 fixedly connected to the upper part of the main fixing plate 1; the main fixing plate 1 comprises mutually connected pre-fixing sections 11 and hanging sections 12; the pre-fixing section 11 is fixedly connected to the suspension splicing end of the first steel box girder through prefabrication, and the suspension splicing section 12 extends out of the suspension splicing end of the first steel box girder and is used for being erected at the suspension splicing end of the second steel box girder to form temporary fixation; the rib plates 2 are arranged at intervals along the length direction of the main fixing plate 1; the reinforcing plate 3 is arranged along the length direction of the main fixing plate 1, and the lower end face of the reinforcing plate 3 is fixedly connected with the upper end face of the rib plate 2 so as to increase the strength of the rib plate 2.
In actual construction, the main fixing plate 1 is arranged, and the main fixing plate 1 comprises a pre-fixing section 11 and a suspension splicing section 12, wherein the pre-fixing section 11 is pre-fixed and fixedly connected to the suspension splicing end of the first steel box girder, the suspension splicing section 12 extends out of the suspension splicing end of the first steel box girder 5a, when the second steel box girder 6b is erected, the first steel box girder 5a can be erected on the second steel box girder 5b through the suspension splicing section 12, and the temporary support on the bridge deck of the existing viaduct to bear the weight of the first steel box girder 5a is avoided, so that the traffic influence on the existing viaduct is avoided; the rib plates 2 are arranged at intervals along the length direction of the main fixing plate 1, the main fixing plate 1 can be supported from the side surface, the main fixing plate 1 is prevented from inclining to two sides, the lower end face of the rib plates 2 can be fixedly connected with the first steel box girder 5a, so that the connection strength with the first steel box girder 5a is increased, and the rib plates can be contacted with the second steel box girder 5b during suspension splicing to share the stress of the main fixing plate 1; the reinforcing plate 3 is arranged along the length direction of the main fixing plate 1, the lower end face of the reinforcing plate 3 is fixedly connected with the upper end face of the rib plate 2, the strength of the main fixing plate 1 and the rib plate 2 is further increased, the main fixing plate 1 and the rib plate 2 can be closely related to each other when being stressed, and the probability of deformation or fracture of the main fixing plate 1 and the rib plate 2 is reduced when the steel box girder cantilever is assembled and constructed.
Specifically, please continue to refer to fig. 5, according to city planning, a new overpass B is needed above the existing overpass a; the construction can be carried out according to the following steps:
S1: temporary supports 6 are built on two sides of the existing viaduct A;
S2: a second steel box girder 5b is arranged on the temporary support 6 at one side, and the suspension splicing end of the second steel box girder 5b extends to the upper part of the existing viaduct A;
S3: a first steel box girder 5a is arranged on the temporary support 6 at the other side, the utility model is prefabricated on the suspension splicing end of the first steel box girder 5a, and a suspension splicing section 12 is erected on the suspension splicing end of a second steel box girder 5 b;
S4: welding and fixing the suspension splicing section 12 and the suspension splicing end of the second steel box girder 5 b;
S5: and repeating the steps S1-S4 along the length direction of the existing viaduct A so as to erect a plurality of steel box girders above the existing viaduct A, and further completing temporary fixation of cantilever assembly construction of the steel box girders under the condition of not affecting the traffic of the existing viaduct A.
Further, please continue to refer to fig. 6, wherein the pre-fixing section 11 and the rib plate 2 on the pre-fixing section 11 are pre-fixed on the upper end surface of the first steel box girder 5 a; when in hoisting, the hoisting equipment hoistes the first steel box girder 5a to drop down gradually as shown by the arrow; with continued reference to fig. 7, after falling, the overhanging spliced section 12 and the rib plate 2 on the overhanging spliced section 12 are contacted with the upper end surface of the second steel box girder 5 b; then, the constructor performs welding fixation on the overhanging spliced section 12 and the rib plate 2 on the overhanging spliced section 12 and the upper end face of the second steel box girder 5b, thereby completing temporary fixation.
With continued reference to fig. 1 and 2, the main fixing plate 1 has a rectangular structure and is perpendicular to the upper end surface of the first steel box girder 5a or 5 b; the main fixing plate 1 comprises a first end face 13 arranged below, a second end face 14 arranged above and side end faces 15 arranged on two sides; the first end face 13 is used for being welded and fixed with the upper end face of the first steel box girder or the second steel box girder; during processing, the rectangular structure is beneficial to reducing the cutting difficulty of the steel plate; when in use, the main fixing plate 1 is perpendicular to the upper end face of the first steel box girder 5a or 5b, which is beneficial to reducing the probability of deformation of the main fixing plate 1.
Please continue to fig. 1 and 2, wherein the reinforcing plate 3 has a rectangular structure and is vertically disposed on the second end surface 14 of the main fixing plate 1; the reinforcing plate 3 comprises a fourth end face 31 arranged below; the fourth end face 31 is welded and fixed with the second end face 14; during processing, the rectangular structure is beneficial to reducing the cutting difficulty of the steel plate; when in use, the fourth end face 31 of the reinforcing plate 3 is welded and fixed with the second end face 14, which is beneficial to increasing the strength of the main fixing plate 1, so that the main fixing plate 1 is not easy to deform when being stressed.
With further reference to fig. 1 and 2, the rib plates 2 are perpendicular to the side end faces 15 of the main fixing plate 1 and perpendicular to the fourth end face 31 of the reinforcing plate 3, so that the welding difficulty is reduced due to the structural design of mutually perpendicular, and the stress on two sides of the vertical rear rib plate 2 is balanced, so that the strength of the utility model can be further increased.
With continued reference to fig. 1 and 2, the rib plate 2 includes a fifth end surface 21 disposed above and a sixth end surface 22 disposed on a side surface; the fifth end surface 21 and the fourth end surface 31 are welded and fixed; the sixth end surface 22 is welded to the side end surface 15.
With continued reference to fig. 1 and 7, in some embodiments, the rib 2 further includes a seventh end surface 23 disposed below; the seventh end face 23 has an area larger than that of the fifth end face 21; the seventh end surface 23 is fitted to the upper end surface of the first steel box girder 5a or the second steel box girder 5 b.
With continued reference to fig. 3 and 7, in other embodiments, an oblique fixing plate 4 is disposed below the rib plate 2; a fixed inclined plane 41 is arranged on one surface of the inclined fixed plate 4, which is close to the first steel box girder 5a or the second steel box girder 5 b; the fixed inclined surface 41 is matched with the side surface of the first steel box girder 5a or the second steel box girder 5 b; the connection part of the inclined fixing plate 4 and the rib plate 2 is provided with a hollow groove 42.
Specifically, referring to fig. 3, 4 and 8, when the erected steel box girder is the steel box girder at the outermost side of the bridge deck, an inclined fixing plate 4 may be disposed below the rib plate 2, and the fixing inclined surface 41 is attached to the side surface of the first steel box girder 5a or the second steel box girder 5b and fixed by welding, so that the temporary fixing of the present utility model is more firm; the empty groove 42 is provided to avoid the edge of the first steel box girder 5a or the second steel box girder 5b from interfering therewith.
The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (8)
1. The utility model provides a temporary fixation structure of construction is assembled to steel case roof beam cantilever which characterized in that: comprises a main fixing plate (1), a rib plate (2) fixedly connected to at least one side of the main fixing plate (1) and a reinforcing plate (3) fixedly connected to the upper part of the main fixing plate (1); the main fixing plate (1) comprises mutually connected pre-fixing sections (11) and hanging sections (12); the pre-fixing section (11) is fixedly connected to the suspension splicing end of the first steel box girder through prefabrication, and the suspension splicing section (12) extends out of the suspension splicing end of the first steel box girder and is used for being erected at the suspension splicing end of the second steel box girder to form temporary fixation; the rib plates (2) are arranged at intervals along the length direction of the main fixing plate (1); the reinforcing plate (3) is arranged along the length direction of the main fixing plate (1), and the lower end face of the reinforcing plate (3) is fixedly connected with the upper end face of the rib plate (2) so as to increase the strength of the rib plate (2).
2. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 1, wherein: the main fixing plate (1) is of a rectangular structure and is perpendicular to the upper end face of the first steel box girder or the second steel box girder; the main fixing plate (1) comprises a first end face (13) arranged below, a second end face (14) arranged above and side end faces (15) arranged on two sides; the first end face (13) is used for being welded and fixed with the upper end face of the first steel box girder or the second steel box girder.
3. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 2, wherein: the reinforcing plate (3) is of a rectangular structure and is vertically arranged on the second end face (14) of the main fixing plate (1); the reinforcing plate (3) comprises a fourth end face (31) arranged below; the fourth end face (31) is welded and fixed with the second end face (14).
4. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 3, wherein: the rib plates (2) are perpendicular to the side end faces (15) of the main fixing plate (1) and perpendicular to the fourth end face (31) of the reinforcing plate (3).
5. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 4, wherein: the rib plate (2) comprises a fifth end face (21) arranged above and a sixth end face (22) arranged on the side face; the fifth end surface (21) and the fourth end surface (31) are welded and fixed; the sixth end surface (22) is welded and fixed with the side end surface (15).
6. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 5, wherein: the rib plate (2) further comprises a seventh end face (23) arranged below; the seventh end face (23) has an area larger than that of the fifth end face (21); the seventh end face (23) is matched with the upper end face of the first steel box girder or the second steel box girder.
7. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 5, wherein: an inclined fixing plate (4) is arranged below the rib plate (2); a fixed inclined plane (41) is arranged on one surface of the inclined fixing plate (4) close to the first steel box girder or the second steel box girder; the fixed inclined surface (41) is matched with the side surface of the first steel box girder or the second steel box girder.
8. The temporary fixing structure for steel box girder cantilever assembling construction according to claim 7, wherein: and an empty groove (42) is formed at the joint of the inclined fixing plate (4) and the rib plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322927904.6U CN221029653U (en) | 2023-10-31 | 2023-10-31 | Temporary fixing structure for steel box girder cantilever assembly construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322927904.6U CN221029653U (en) | 2023-10-31 | 2023-10-31 | Temporary fixing structure for steel box girder cantilever assembly construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221029653U true CN221029653U (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322927904.6U Active CN221029653U (en) | 2023-10-31 | 2023-10-31 | Temporary fixing structure for steel box girder cantilever assembly construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221029653U (en) |
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2023
- 2023-10-31 CN CN202322927904.6U patent/CN221029653U/en active Active
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